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SigenStor 5-in-1 solar and battery storage, installed from R74,500

Inverter, battery, EV fast charger and energy management in one stackable unit. It keeps the whole house running through load shedding, grows as your needs grow, and every price is on this page.

R74,500
Essential Backup, installed · VAT included · CoC issued
Every price published, installed, VAT included. No "from" games, no quote-to-find-out. Eleven fixed packages below, up to 25 kW three phase. Prices apply within 100 km of our Centurion, Cape Town and Polokwane branches; further out, travel is quoted upfront.

Why SigenStor All 11 prices Warranty and fine print South African FAQ

Technician-installed, electrician-certified, CoC issued. Trading since 2010, with branches in Centurion, Cape Town and Polokwane.

Since 2010
installing in SA
1,700+
installations completed
4.7 stars
from 85 Google reviews
48 MW
of solar PV installed
17+ MWh
of battery storage
2,200+
clients served
The product

One unit that replaces the whole wall of boxes

SigenStor is a home energy system by Sigenergy that stacks five things into one floor-standing tower: a hybrid solar inverter, battery modules, an optional DC fast charger for your EV, the power conversion electronics and an AI energy manager. No separate inverter on one wall, battery cabinet on another and charger in the garage. One unit, one installation, one app.

It's rated IP66, so it lives happily outside, and it's built like Lego: battery modules click on as your needs grow, from 6 kWh to just over 54 kWh on a single tower.

Why SigenStor

Why South African homes are choosing SigenStor

Load shedding becomes something you read about, not something you live

When the grid drops, the gateway switches your house to battery with a changeover rated at 0 ms. The lights don't flicker, the WiFi doesn't reboot, the braai evening carries on. And because the inverter delivers double its rated power for 10 seconds, pool pumps, gate motors and borehole pumps start without tripping anything.

Stage 6 stops being your problem.

Buy what you need now, stack more when life changes

Most batteries force you to guess your future on day one. SigenStor doesn't. Battery modules of 6 kWh or 9 kWh click onto the same tower whenever you're ready, up to 54 kWh, and every module carries its own optimiser, so a module you add in 2029 works perfectly alongside the ones from 2026. Baby on the way, heat pump added, working from home: the system grows with the house.

The panels have headroom too. Single-phase units accept up to double their rating in solar panels, and the larger units run up to four independent MPP trackers, so arrays can split across east and west roof faces to stretch generation into morning and evening. Add panels later without replacing the inverter.

Start at R74,500. Never buy twice.

Three-phase homes, finally solved

If you've got a larger home, a borehole or a workshop, you're probably on three-phase power, and you've probably been told a home battery can't back it up properly. SigenStor's three-phase range runs to 25 kW in our packages, backs up all three phases, and pushes power to each phase as it's needed rather than splitting it rigidly in thirds. The Tesla Powerwall 3 we install is single phase only. This is the system we hand three-phase clients.

And for farms and smallholdings, the gateway has a dedicated generator port with 2-wire auto-start: in a long outage, when the battery runs low, the system starts your diesel generator itself, recharges, and shuts it off again. You don't get out of bed.

Whole-supply backup, not one phase out of three.

Charge your EV at up to 25 kW, straight from the sun

The optional DC charging module turns the same tower into a fast charger: 12.5 kW as standard, upgradeable to 25 kW, three times what a typical home wallbox delivers. Set it to charge from solar surplus and your driving costs nothing. The hardware is already built for vehicle-to-home, so when the standards land, your car can become another battery for the house through a software update.

The garage becomes a filling station.

Safety engineered in, not bolted on

The battery modules use lithium iron phosphate cells, the safest mainstream chemistry, rated for 10,000 cycles with 100% usable capacity. Around them sit five layers of protection: cell-level temperature monitoring, an internal fire-extinguishing kit, insulated aerogel padding, a decompression valve and live monitoring in the app. This is the battery you're happy to have against the house wall.

10,000 cycles. Five protection layers. IP66 outdoors.

The brains

An app you'll actually open

Most inverter apps get opened twice and deleted. mySigen earns its home-screen spot, because it saves you money while you sleep.

Sigen AI Mode

Learns your usage, watches the weather forecast and schedules the battery around your tariff. On time-of-use tariffs like Eskom Homeflex it charges when power is cheap and spends when it's expensive, automatically.

See every watt

A live energy-flow view shows exactly where power is coming from and going to, refreshed every 10 seconds. You'll finally know what the geyser actually costs.

Ask it anything

A built-in AI assistant answers in plain language: how long the battery will last tonight, why yesterday's yield dipped, how to prepare for a storm.

Your geyser becomes a solar appliance

Native Shelly integration controls up to 24 smart switches per system. When there's solar surplus, the geyser or pool pump switches on automatically instead of the power going to waste, and in an outage, loads you've marked non-critical drop off so the battery lasts the night.

We watch it too

Our team can monitor your system remotely with your permission, spot faults before you notice them, and fix most issues without a callout.

mySigen app showing live energy flow between solar, battery, grid and home on a SigenStor system
Pricing

SigenStor prices, installed

Eleven fixed packages, every price published. The price shown is the installed price for a standard residential installation, and the comparison further down shows how it sits against the alternatives we also sell.

The entry point

Essential Backup

6 kW inverter, 6 kWh battery and gateway. No panels: pure load shedding protection, and the same price whether it's a brand-new backup system or the replacement for a failing inverter and battery on your existing solar array.

R74,500

VAT included · installed · CoC issued for the installation · SSEG registration quoted separately

SigenStor Essential Backup package: 6 kW inverter and 6 kWh battery tower

Single-phase homes, with solar

SigenStor Solar Starter package: inverter, battery tower and solar panels

Solar Starter

R99,529
VAT included · installed · CoC issued · SSEG quoted separately
  • 6 kW inverter
  • 6 kWh battery
  • 6 solar panels (3.6 kWp)
  • Gateway

Up to ~570 kWh/month. Suits utility bills of roughly R2,000 to R3,000.

SigenStor Home Plus package: inverter, battery tower and solar panels

Home Plus

R134,840
VAT included · installed · CoC issued · SSEG quoted separately
  • 8 kW inverter
  • 9 kWh battery
  • 10 solar panels (6 kWp)
  • Gateway

Up to ~950 kWh/month. Suits utility bills of roughly R3,000 to R4,000.

SigenStor Home Comfort package: inverter, battery tower and solar panels

Home Comfort

R147,747
VAT included · installed · CoC issued · SSEG quoted separately
  • 6 kW inverter
  • 12 kWh battery
  • 10 solar panels (6 kWp)
  • Gateway

Up to ~950 kWh/month with more evening storage. Suits utility bills of roughly R3,000 to R4,000.

SigenStor Independence package: inverter, battery tower and solar panels

Independence

R170,456
VAT included · installed · CoC issued · SSEG quoted separately
  • 12 kW inverter
  • 12 kWh battery
  • 12 solar panels (7.2 kWp)
  • Gateway

Up to ~1,100 kWh/month. Suits utility bills of roughly R3,000 to R4,000.

SigenStor Home Pro package: inverter, battery tower and solar panels

Home Pro

R171,447
VAT included · installed · CoC issued · SSEG quoted separately
  • 8 kW inverter
  • 12 kWh battery
  • 14 solar panels (8.4 kWp)
  • Gateway

Up to ~1,300 kWh/month. Suits utility bills of roughly R4,500 to R5,500.

SigenStor Independence Plus package: inverter, battery tower and solar panels

Independence Plus

R202,932
VAT included · installed · CoC issued · SSEG quoted separately
  • 12 kW inverter
  • 18 kWh battery
  • 16 solar panels (9.6 kWp)
  • Gateway

Up to ~1,500 kWh/month. Suits utility bills of roughly R6,000 to R7,000.

Three-phase homes

SigenStor Premium package: inverter, battery tower and solar panels

Premium

R219,852
VAT included · installed · CoC issued · SSEG quoted separately
  • 15 kW three-phase inverter
  • 18 kWh battery
  • 14 solar panels (8.4 kWp)
  • Gateway

Up to ~1,300 kWh/month. Suits three-phase homes with utility bills of roughly R4,500 to R5,500.

SigenStor Premium Plus package: inverter, battery tower and solar panels

Premium Plus

R234,133
VAT included · installed · CoC issued · SSEG quoted separately
  • 15 kW three-phase inverter
  • 18 kWh battery
  • 18 solar panels (10.8 kWp)
  • Gateway

Up to ~1,700 kWh/month. Suits three-phase homes with utility bills of roughly R7,000 to R7,500.

SigenStor Ultimate package: inverter, battery tower and solar panels

Ultimate

R323,898
VAT included · installed · CoC issued · SSEG quoted separately
  • 25 kW three-phase inverter
  • 27 kWh battery
  • 18 solar panels (10.8 kWp)
  • Gateway

Up to ~1,700 kWh/month with deep storage. Suits large three-phase homes with utility bills above R7,000.

SigenStor Ultimate Plus package: inverter, battery tower and solar panels

Ultimate Plus

R385,841
VAT included · installed · CoC issued · SSEG quoted separately
  • 25 kW three-phase inverter
  • 36 kWh battery
  • 24 solar panels (14.4 kWp)
  • Gateway

Up to ~2,300 kWh/month. Suits large three-phase homes with utility bills of roughly R9,000 to R10,000.

Installed prices apply within 100 km of our Centurion, Cape Town or Polokwane branch. We work further afield too, and travel is quoted as a separate line before you commit, never added afterwards.

Prices current as of 2 September 2026 and reviewed against supplier pricing monthly. If your roof, distribution board or cable runs are unusual, we'll tell you what changes and why before you commit. What we don't do is advertise one price and invoice another.

Financing. If you'd rather pay monthly than upfront, there are four ways to do it: a rental, rent-to-own, asset finance, or adding it to your home loan. Each runs through an independent finance provider and suits a different situation, so tell us which way you lean when you request your quote and we'll point you to the right one. Approval and terms are the provider's, and the package price on this page is the same whichever way you pay.

Existing systems

Already have solar that's giving trouble?

If your inverter or battery has failed and your panels are healthy, the Essential Backup above is the fix: same price as a new installation, and your array carries on working with a better system behind it. If you're not sure what's wrong, or your installer has disappeared, our My Solar Friend service diagnoses orphaned and faulty systems as a paid callout, from R1,950, and we'll tell you plainly whether a repair beats a replacement.

What the free assessment covers: sizing your new SigenStor system, checking your phase and distribution board, and producing a fixed quote. Fault-finding on an existing installation is paid diagnostic work through My Solar Friend. We keep the two separate so neither subsidises the other.

Local reality

Built for how South Africa actually works

Load shedding and outages. Backup capacity, seamless changeover and a generator input on the gateway mean the house keeps running through Stage 6 or a cable fault, and the app shows how long the battery will last at current draw.

SSEG registration, handled. Any grid-tied system must be registered with your municipality as Small-Scale Embedded Generation, with an NRS 097-2-1 compliant inverter. We do the paperwork and the compliance settings for you, and we quote it separately because Tshwane, Cape Town, Polokwane and Eskom-direct areas each charge and process differently. Your package price stays honest either way. And where a municipality doesn't allow feeding back into the grid, the gateway's zero-export mode monitors in real time and holds export at zero, which is often the difference between a quick SSEG approval and a slow one.

Time-of-use tariffs. On Eskom Homeflex and similar tariffs the AI shifts charging into cheap windows automatically. That's a second saving on top of the solar itself.

Certification your insurer recognises. Every installation is technician-installed, electrician-certified and issued with a Certificate of Compliance for the electrical work.

Specifications

Specifications that matter

One table, taken from Sigenergy's current datasheets, so there's a single version of the truth on this page.

ItemSingle-phase rangeThree-phase range
Inverter sizes available3 kW to 12 kW (we package 6, 8 and 12 kW)5 kW to 30 kW (we package 15 and 25 kW)
Peak outputDouble the rated power for 10 seconds, for motor and pump starting
Panel oversizingUp to 2.0 times the inverter rating in PVUp to 4 MPP trackers for split arrays
Battery modules6.02 kWh or 9.04 kWh per module, 1 to 6 modules per unit, up to 54.2 kWh on one tower
Battery chemistryLithium iron phosphate (LFP), 314 Ah cells, 10,000-cycle rating, 100% usable depth of discharge
Changeover time0 ms on the load side, with the Sigen gateway installed
EfficiencyUp to 98% maximum inverter efficiency
Operating temperature-30 °C to 60 °C, built for a Limpopo December and a Highveld July alike
EV charging (optional)DC charging module, 12.5 kW upgradeable to 25 kW, CCS2 connector
Protection ratingIP66 on the tower, suitable for outdoor installation; gateway IP55, mounted indoors or under cover
Warranty10 years on the energy controller and battery modules; 2 years on the gateway and communication module. Full conditions below.

Source: Sigenergy Home Energy Solution datasheet, version 20260806, and the Sigenergy factory limited warranty. If a spec here ever disagrees with Sigenergy's current documents, their documents win and we'll correct this page.

The fine print

A 10-year warranty, and the fine print we publish anyway

We'd put SigenStor among the best residential inverter systems you can buy in South Africa today, and we say that as an installer of six brands since 2010: up to 98% efficiency, 0 ms changeover with the gateway, IP66 for outdoor mounting, 10,000-cycle LFP cells behind five layers of battery protection, and a manufacturer that listed on the Hong Kong Stock Exchange this year. The warranty matches the hardware: 10 years on the inverter system and battery modules, covering the hardware, the repair labour on site and the shipping of parts. That's wider cover than several far older brands offer. We publish the conditions below not to talk you out of anything, but because a warranty you understand is worth more than one you discover during a claim, and because as our client, managing these conditions is our job, not yours.

Know before you buy

Coastal homes. Salt air is hard on every brand's electronics, so anywhere near the sea we specify an indoor position for the unit, a ventilated garage or utility room out of the spray and the sea wind. That's what protects the hardware. The warranty is a separate matter and we want you to read it the way we do: Sigenergy's standard terms exclude rust caused by harsh environments, and separately exclude any installation within 500 m of the coastline or in areas affected by sea winds. Careful placement deals with the first. It doesn't remove the second. So if you're in Bloubergstrand, Melkbosstrand or anywhere inside that band, tell us upfront. We confirm cover in writing with the South African distributor before we quote, and if it can't be confirmed we quote a Victron system instead, a brand with decades of marine and coastal use behind it. We'd rather lose the SigenStor sale than sell you a warranty that won't pay out.

Keep it online. The full 10-year term relies on periodic internet connection for firmware updates; extended offline periods can reduce cover to a 5-year floor. Practically: keep it on your WiFi, or we fit the 4G module in poor-signal areas.

Claims run through us, on Sigenergy's clock. Sigenergy requires a claim within 30 days of a failure, with serial numbers, fault codes and app data attached. You WhatsApp us, we lodge it correctly and on time, and we chase it. What we can't do is speed up Sigenergy's own diagnosis and parts turnaround, so we tell you at the start what they've committed to rather than promise a date we don't control. If a fault turns out not to be covered, Sigenergy may charge a handling fee, and you'll hear that from us before it happens, not after. If any cost isn't covered by Sigenergy, we confirm it with you before any work starts.

The gateway carries 2 years. Supporting components have shorter cover than the battery and inverter. You should know that on the day you buy, not the day something breaks.

Lightning and surge aren't covered, by any brand. Storm damage, lightning, over-voltage, fire and flooding sit under force majeure and are excluded. SigenStor has Type II surge protection on both the DC and AC sides built in, and we earth and protect the installation properly, but a direct strike on the Highveld is an insurance matter, not a warranty one. Tell your insurer the system is installed. Clients ask us whether they should, and the answer is always yes.

It sells with the house. The warranty transfers to the next owner as long as the equipment stays where it was installed. If you're thinking of moving in a few years, that matters more than it sounds.

Our workmanship: 10 years, with one condition. Sigenergy's warranty covers the hardware. Ours covers everything we did to install it: the mounting, the cabling, the board work, the earthing, the commissioning. We stand behind that for 10 years, on condition the system is serviced by us once a year, because a system we inspect annually is one we can vouch for. The annual service is a paid visit, priced by system size and quoted with the installation so you know the number upfront. If it isn't serviced, the workmanship cover is 2 years. Either way, it's ours, not the manufacturer's, and it doesn't depend on Sigenergy's fortunes.

Where the parts live. The SigenStor tower is IP66 and can go outdoors, on a wall or on the floor. A wall-mounted stack is limited to two battery modules; anything larger stands on the floor. The gateway is IP55 and gets mounted indoors or under cover next to your distribution board. We settle all of that at the assessment so nothing gets improvised on install day.

On Sigenergy being a young company. Founded in 2022 by Tony Xu, who previously ran Huawei's solar inverter business, the world's largest, and listed on the Hong Kong Stock Exchange in 2026. The hardware has earned its place across our installations since it entered South Africa. And because we've been a multi-brand installer since 2010, our workmanship cover and support don't depend on any single manufacturer. If the brand's age still bothers you, look at our Victron or Tesla pages. That's the point of stocking six brands.

The process

How the installation works

Tell us about your home. The form below or a WhatsApp. Your monthly bill, your suburb and whether you're single or three phase is enough to start.
Free assessment. One of our system designers sizes the system against your usage and roof, and checks your phase and distribution board. This is a design and quoting visit, not a repair or fault-finding visit.
Fixed quote. The package price from this page, plus any site-specific extras itemised and explained. SSEG registration quoted alongside so there's no surprise later.
Installation. Our specialist solar technicians install the system, typically over one to two days for a residential package.
Certification. The installation is certified by an electrician and a Certificate of Compliance is issued for the electrical work.
Registration. We submit the SSEG paperwork to your municipality or Eskom, from R8,500, covering the compliance inspection, the NRS 097-2 test report, the single line diagram and the submission. Municipal and Eskom fees vary by area and we confirm the current figure for yours in your quote. We also configure the inverter to your utility's grid code.
Handover and aftercare. We set up the mySigen app with you, walk through the AI mode, and stay your first call for the life of the system.
Honest comparison

SigenStor against what we also sell

We install all three of these, so this isn't a hit piece on the competition. It's how we position them for clients.

SigenStorTesla Powerwall 3Deye / Sunsynk build
Entry price, installedR74,500R169,900The cheapest of the three; see the Deye and Sunsynk page for current pricing
Battery growthStack to 54 kWh on one unit, modules added anytime13.5 kWh per unit, add whole unitsAdd rack batteries, brand-dependent
Three-phase backupYes, native, 15 to 25 kW packagesNo, single phase onlyPossible with paralleled inverters, more hardware
EV DC fast charging built inOptional, up to 25 kWNoNo
Best forGrowing homes, three-phase houses, EV ownersSingle-phase homes wanting the established nameThe tightest budget that still wants the lights on

Full head-to-head, including Victron: Tesla Powerwall 3 vs SigenStor vs Victron.

Reviews

What clients say

4.7 stars
from 85 Google reviews across our three branches
★★★★★
I couldn't be more thrilled with my decision to go solar, and Synergy Energy Solutions made the entire process seamless and enjoyable. From the initial consultation to the final installation, their professionalism, expertise, and dedication to customer satisfaction were evident every step of the way. The installation crew was punctual, efficient, and left my property spotless.
Connected R Us Business client
★★★★★
Thank you Jacques and Jaco from Synergy Energy Solutions. Your professionalism and excellent service resulted in a great solar installation and solution. We are very happy and would recommend you to anyone looking for a residential or commercial solution. We can vouch for both. Well done.
Rob De Oliveira
★★★★★
What an absolute pleasure to have Synergy as my solar provider. After I have been scammed previously by a 'reputable' company, I was unsure where to turn next. Synergy was recommended and from day one they exceeded my wildest expectations. Very professional, always friendly, prompt service and the list goes on. Thank you Jean and team, you guys rock!
Suzette Truter
★★★★★
What a pleasure to deal with Synergy, it's a company with experience and after-care service. Jacques always takes my calls (and there were many) during and after the installation, always willing to assist, always monitoring our system for optimal usage. Our site was always clean, they were always on time. Jacques and team, thank you, it's much appreciated.
Edmund Carles
★★★★★
Synergy Energy Solutions is an excellent company, very good workmanship as requested. The system looks neat and professional. Thank you also for the over-and-above tasks that were performed for the preparation of the installation. The system has been running for a month now, I was always immediately assisted by competent personnel. The form, fit and function of the system is awesome!
Colin Strecker Local Guide
★★★★★
I have used Synergy Solutions to do solar installations on two separate occasions. In both instances I found them to be speedy, professional, friendly and extremely competent. I can highly recommend them.
Anne Norton Repeat customer
Where we install

Three branches, one price list

Every installed price on this page applies within 100 km of the branch nearest you. Further out, we still come, and travel appears as its own line on the quote before you decide anything.

Centurion, Gauteng

30 Pretorius Avenue, Lyttelton Manor, Centurion, 0157

Head office. Installed prices apply within 100 km, which covers Pretoria, Johannesburg, the East and West Rand and the Vaal.

010 601 6464 · Google listing

Table View, Cape Town

Unit 202, 10 Blaauwberg Road, Table View, Cape Town, 7439

Installed prices apply within 100 km, which covers the Cape metro, the Winelands and the West Coast as far as Langebaan. Coastal homes: read the warranty section first.

010 601 6464 · Google listing

Polokwane, Limpopo

47 Platinum Street, Polokwane Ext 17, Polokwane, 0699

Installed prices apply within 100 km, which covers Mokopane, Tzaneen and Bela-Bela. Farms and smallholdings are a large part of what this branch does.

010 601 6464 · Google listing

Accreditations and memberships

Our industry memberships and certifications

Synergy Energy Solutions is accredited by South Africa's leading electrical, solar and battery industry bodies. Every one of these is independently verifiable, so you don't have to take our word for it.

ECA

Member of the Electrical Contractors' Association of South Africa, the leading industry body for registered electrical contractors.

Verify on the ECA site

PV GreenCard

Synergy is registered on the PV GreenCard programme and Jacques Venter holds the qualification personally. It's the industry-led quality label for small-scale solar PV installations in South Africa.

About PV GreenCard

SAPVIA

Member of the South African Photovoltaic Industry Association, the recognised body setting installation, training and quality standards nationwide.

Verify on the SAPVIA site

Approved Sigenergy Installer

Approved SigenStor supplier and installer, trained and authorised by Sigenergy to design, install and service SigenStor systems in South Africa.

Sigenergy website
South African FAQ

SigenStor in South Africa: the questions that matter

What does a SigenStor system cost in South Africa?

Installed by us, from R74,500 for a 6 kW inverter with 6 kWh of battery, up to R385,841 for a 25 kW three-phase system with 36 kWh of battery and 24 solar panels. All eleven package prices are published on this page, VAT included, with a CoC issued for the installation, and apply within 100 km of our Centurion, Cape Town or Polokwane branch. Outside that radius we quote travel as a separate line upfront. SSEG registration is quoted separately because municipal fees differ.

Can I finance a SigenStor system instead of paying upfront?

Yes, in four ways. A rental gives you the system for a monthly fee with no upfront cost and no ownership. Rent-to-own is similar but the system becomes yours at the end of the term. Asset finance is a plain loan against the installed system, paid off over a fixed term, and you own it from day one. And if you have a bond, most banks will add a solar installation to your home loan, which is usually the cheapest money of the four. We work with independent providers for each, and we'll match you to the one that fits your situation rather than push a single product. You apply with the provider, they assess and approve, and we install once the finance is in place. The package price on this page doesn't change whether you pay cash or finance.

Do I need to register a SigenStor system with my municipality?

Yes, if it connects to the grid. Every grid-tied system must be registered as Small-Scale Embedded Generation (SSEG) with your municipality or with Eskom in direct-supply areas, and the inverter must comply with NRS 097-2-1. We handle the application, from R8,500, covering the compliance inspection, the NRS 097-2 test report, the single line diagram and the submission, and we configure the inverter to your utility's grid code. The process, cost and timeline differ between Tshwane, Cape Town, Polokwane and Eskom areas, which is why we quote it separately rather than hiding an average in the package price.

Will SigenStor run my whole house during load shedding?

It can, if it's sized for it. The gateway switches the house to battery with no measurable interruption, and the inverter delivers double its rated power for 10 seconds so pool pumps and gate motors start normally. Whether "the whole house" is realistic depends on your battery size and what's running: a 6 kWh entry system carries lights, WiFi, TV and the fridge through a 4-hour stage comfortably, while running ovens and geysers through an outage needs the larger packages. We size this with you at the assessment, and we'll tell you if a smaller package won't do what you want.

Does SigenStor work on a three-phase house?

Yes, properly. The three-phase range covers 5 kW to 30 kW, and our packages use the 15 kW and 25 kW units. Output is unbalanced per phase, meaning each phase gets what it needs rather than a rigid third, and the whole supply is backed up. This is SigenStor's biggest advantage in South Africa, where most larger homes are three phase and most residential batteries, including the Tesla Powerwall 3, only handle single phase.

Can I keep my existing solar panels and just replace my inverter and battery?

Usually, yes. The Essential Backup package at R74,500 is priced exactly for this: your panels stay on the roof and SigenStor becomes the new heart of the system. Our system designers check your array's voltage and string configuration against the inverter's operating window before we quote, because panel voltages from older installations don't always match modern MPPT ranges. That check is part of the free assessment.

What warranty does SigenStor carry, and what are the conditions?

10 years on the inverter system and battery modules, 2 years on the gateway and communication module. The conditions worth knowing: the system must connect to the internet periodically or the term can reduce to a 5-year floor, claims must be lodged within 30 days of a failure, the warranty excludes installations within 500 m of the coastline, and it only transfers to a new owner if the system stays in the original property. We publish these because you should know them before buying, not when claiming. As our client, we lodge and manage any claim for you. One care note from the fine print worth knowing: after a full discharge, the battery should be recharged within 7 days to stay healthy, which the system manages itself as long as it isn't switched off and abandoned.

What does Synergy's own workmanship warranty cover, and for how long?

Everything we did, as opposed to what Sigenergy built: mounting, cabling, distribution board work, earthing and commissioning. It runs for 10 years if we service the system once a year, and for 2 years if we don't. The annual service is a paid visit, priced by the size of your system and confirmed with your installation quote. It's how we keep the promise honest: we check connections, torque, firmware, battery health and the CoC-relevant parts of the installation, and we log it. It sits alongside Sigenergy's hardware warranty, not instead of it.

Sigenergy is only four years old. Why should I trust it with a 10-year warranty?

A fair question, and the honest answer has three parts. Sigenergy was founded in 2022 by the former head of Huawei's solar inverter business, is listed on the Hong Kong Stock Exchange, and builds at a scale most old brands never reached, so this isn't a garage startup. Second, the hardware has performed well across our installations since it entered South Africa. Third, we've been trading since 2010 and stock six battery brands: our workmanship cover and support don't depend on any one manufacturer's fortunes. If the brand's age still bothers you, we'd rather sell you a Victron than talk you past a real concern.

What happens if something breaks? How do claims work?

You contact us, on WhatsApp or by phone, and we take it from there. Sigenergy claims run through their service system with diagnostics done remotely where possible, and we lodge the claim, manage the 30-day deadline and handle the site visit. The warranty covers parts, repair labour and shipping of replacement parts. Keep the system online: remote diagnosis is the difference between a fix in days and a fix in weeks.

Can SigenStor charge my electric car?

Yes, and faster than almost anything else you can bolt to a house. The optional DC charging module delivers 12.5 kW, upgradeable to 25 kW, through a CCS2 connector, several times faster than a typical 7 kW home wallbox, and it can charge straight from your solar. Vehicle-to-home, where the car powers the house, is built into the hardware and awaits standards and vehicle support before it can be switched on here. If you just need a normal wallbox instead, see our EV charging page.

Does it work with Eskom's Homeflex and other time-of-use tariffs?

Yes, and this is where the AI earns its keep. On a time-of-use tariff the system learns your consumption pattern, watches the weather forecast, and schedules battery charging into cheap periods while spending stored energy through expensive ones. On a flat municipal tariff the benefit is smaller but the self-consumption optimisation still applies. We configure the tariff structure in the app at handover.

Can SigenStor heat my geyser with excess solar?

Yes, through the app's native Shelly integration. A Shelly smart switch on the geyser circuit lets mySigen turn the geyser on automatically whenever your panels produce more than the house is using, so surplus solar heats water instead of being wasted or exported. The same works for pool pumps and up to 24 devices per system, each schedulable around time-of-use tariff windows. During an outage, devices you've marked non-critical switch off automatically to stretch the battery. We install and pair the switches as part of the job if you want them.

Can I connect a diesel generator to a SigenStor system?

Yes, and better than most systems do it. The Sigen gateway has a dedicated generator port with 2-wire auto-start: during an extended outage, when the battery reaches a set level, the system starts the generator automatically, uses it to carry the house and recharge, then shuts it down. For farms, smallholdings and areas with long unplanned outages, this turns solar, battery and generator into one automatic system instead of three things you juggle manually.

What if my municipality doesn't allow feeding electricity back into the grid?

Then the system runs in zero-export mode. The gateway monitors your connection in real time and holds export at zero, so nothing flows back into the grid even for a moment. Solar surplus goes into the battery, the geyser or other smart loads instead. In practice, demonstrating certified zero export is often what gets an SSEG application through quickly in stricter municipalities, and we configure and document it as part of the registration.

Can I add more solar panels later without changing the inverter?

Usually, yes, and by a wide margin. SigenStor's single-phase units accept up to double their rating in panels, so a 6 kW inverter can carry up to 12 kWp of PV, and the larger units run up to four independent MPP trackers, which lets arrays split across east and west roof faces. Practically that means you can start with the panel count in your package and grow the array as budget allows, without touching the inverter. We design the string layout with that headroom in mind from day one.

Do I have to back up the whole house, or can I choose what stays on?

You choose, and choosing well is how a smaller battery feels bigger. The gateway supports whole-home backup and prioritised backup: essentials like lights, WiFi, fridge, alarm and gate stay on, while heavy circuits like the oven and geyser element sit outside the backup or switch off automatically through smart load control when the grid fails. We plan this circuit split with you at the assessment, because it's the single biggest factor in how long your battery lasts through an outage.

How big can the battery go, and can I add to it later?

Modules are 6 kWh or 9 kWh, and one unit takes up to six of them, just over 54 kWh. You can start with one module and add more years later: each module has its own optimiser, so new and old modules work together without the whole bank degrading to the oldest module's level. Two practical limits: a wall-mounted stack takes at most two modules, so three or more means a floor-standing tower, and one HomePro gateway manages one tower. Beyond that, additional towers and a gateway that manages several controllers are added for larger homes and smallholdings.

How long does the installation take?

Most residential packages are installed in one to two days on site, depending on panel count and how your distribution board is laid out. SSEG registration runs on the municipality's clock afterwards, which we manage but can't accelerate. From accepting a quote to switch-on is typically inside two to three weeks, stock permitting.

Sigenergy is a Chinese company. Where is SigenStor actually supported?

Support runs on two levels. Sigenergy operates in South Africa with local distribution and technical support, and warranty claims are processed through their service system with remote diagnostics. Day to day, though, your support is us: we're the approved installer, we monitor the system if you allow it, we lodge any claims, and we've had branches in Centurion, Cape Town and Polokwane long before this product existed. You're never phoning Shanghai.

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